The absolute benefit of screening mammography varies according to the age-specific accuracy and efficacy of mammography as well as the incidence of breast cancer in the population screened. Asian women have lower breast cancer incidence and mortality rates compared with white women. Screening mammography outcomes among Asian women in the United States have received little attention. This study found that screening mammography has similar accuracy among white, Chinese, and Filipino women despite lower rates of invasive cancer in Asian women. The rate of ductal carcinoma in situ was similar in all ethnic groups. These results suggest that the absolute benefit of screening, in terms of breast cancer deaths averted, is likely to be less among Asian women, and overdiagnosis of ductal carcinoma in situ with screening mammography among Asian women is likely to be comparable to that of white women.